| java.lang.Object
 org.geotools.geometry.jts.AbstractLiteIterator
org.geotools.geometry.jts.PolygonIterator
| PolygonIterator | | final public class PolygonIterator extends AbstractLiteIterator (Code) | | A path iterator for the LiteShape class, specialized to iterate over Polygon
objects.
author:
Andrea Aime
author:
simone giannecchini
version:
$Id: PolygonIterator.java 25086 2007-04-10 08:54:25Z aaime $ |
| Method Summary | |
| public int | currentSegment(double[] coords)
Returns the coordinates and type of the current path segment in the
iteration. | | public double | getMaxDistance()
| | public int | getWindingRule()
Return the winding rule for determining the interior of the path. | | public boolean | isDone()
Tests if the iteration is complete. | | public void | next()
Moves the iterator to the next segment of the path forwards along the
primary direction of traversal as long as there are more points in that
direction. | | public void | setMaxDistance(double distance)
| | protected void | transform(double[] src, int index, double[] dest, int destIndex, int numPoints)
|
| PolygonIterator | | public PolygonIterator(Polygon p, AffineTransform at)(Code) | | Creates a new PolygonIterator object.
Parameters:
p - The polygon
Parameters:
at - The affine transform applied to coordinates during iteration |
| PolygonIterator | | public PolygonIterator(Polygon p, AffineTransform at, boolean generalize)(Code) | | Creates a new PolygonIterator object.
Parameters:
p - The polygon
Parameters:
at - The affine transform applied to coordinates during iteration
Parameters:
generalize - if true apply simple distance based generalization |
| PolygonIterator | | public PolygonIterator(Polygon p, AffineTransform at, boolean generalize, double maxDistance)(Code) | | Creates a new PolygonIterator object.
Parameters:
p - The polygon
Parameters:
at - The affine transform applied to coordinates during iteration
Parameters:
generalize - if true apply simple distance based generalization
Parameters:
maxDistance - during iteration, a point will be skipped if it'sdistance from the previous is less than maxDistance |
| currentSegment | | public int currentSegment(double[] coords)(Code) | | Returns the coordinates and type of the current path segment in the
iteration. The return value is the path-segment type: SEG_MOVETO,
SEG_LINETO, SEG_QUADTO, SEG_CUBICTO, or SEG_CLOSE. A double array of
length 6 must be passed in and can be used to store the coordinates of
the point(s). Each point is stored as a pair of double x,y coordinates.
SEG_MOVETO and SEG_LINETO types returns one point, SEG_QUADTO returns
two points, SEG_CUBICTO returns 3 points and SEG_CLOSE does not return
any points.
Parameters:
coords - an array that holds the data returned from this method the path-segment type of the current path segment.
See Also: PolygonIterator.SEG_MOVETO
See Also: PolygonIterator.SEG_LINETO
See Also: PolygonIterator.SEG_QUADTO
See Also: PolygonIterator.SEG_CUBICTO
See Also: PolygonIterator.SEG_CLOSE |
| getMaxDistance | | public double getMaxDistance()(Code) | | Returns the distance limit for point skipping during distance based
generalization
the maximum distance for distance based generalization |
| getWindingRule | | public int getWindingRule()(Code) | | Return the winding rule for determining the interior of the path.
WIND_EVEN_ODD by default. |
| isDone | | public boolean isDone()(Code) | | Tests if the iteration is complete.
true if all the segments have been read;false otherwise. |
| next | | public void next()(Code) | | Moves the iterator to the next segment of the path forwards along the
primary direction of traversal as long as there are more points in that
direction.
|
| setMaxDistance | | public void setMaxDistance(double distance)(Code) | | Sets the distance limit for point skipping during distance based
generalization
Parameters:
distance - the maximum distance for point skipping |
| transform | | protected void transform(double[] src, int index, double[] dest, int destIndex, int numPoints)(Code) | | |
| Fields inherited from org.geotools.geometry.jts.AbstractLiteIterator | protected double[] dcoords(Code)(Java Doc)
|
| Methods inherited from org.geotools.geometry.jts.AbstractLiteIterator | public int currentSegment(float[] coords)(Code)(Java Doc)
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